US10906095B2 - Mould for manufacturing mould steels - Google Patents

Mould for manufacturing mould steels Download PDF

Info

Publication number
US10906095B2
US10906095B2 US16/074,015 US201716074015A US10906095B2 US 10906095 B2 US10906095 B2 US 10906095B2 US 201716074015 A US201716074015 A US 201716074015A US 10906095 B2 US10906095 B2 US 10906095B2
Authority
US
United States
Prior art keywords
mould
thickness
curved surfaces
short sides
sections
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US16/074,015
Other versions
US20190039127A1 (en
Inventor
Eva Sjoqvist Persson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Uddeholms AB
Original Assignee
Uddeholms AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Uddeholms AB filed Critical Uddeholms AB
Assigned to UDDEHOLMS AB reassignment UDDEHOLMS AB ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PERSSON, EVA SJOQVIST
Publication of US20190039127A1 publication Critical patent/US20190039127A1/en
Application granted granted Critical
Publication of US10906095B2 publication Critical patent/US10906095B2/en
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D23/00—Casting processes not provided for in groups B22D1/00 - B22D21/00
    • B22D23/06—Melting-down metal, e.g. metal particles, in the mould
    • B22D23/10—Electroslag casting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D7/00—Casting ingots, e.g. from ferrous metals
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D7/00—Casting ingots, e.g. from ferrous metals
    • B22D7/06—Ingot moulds or their manufacture
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/16—Remelting metals
    • C22B9/18—Electroslag remelting

Definitions

  • the invention relates to a mould for the manufacturing of mould steels in an Inertgas Electro Slag Remelting (IESR) or a Pressurized Electro Slag Remelting (PESR) process.
  • IESR Inertgas Electro Slag Remelting
  • PESR Pressurized Electro Slag Remelting
  • ESR Electro Slag Remelting
  • Inertgas Electro Slag Remelting (IESR) and Pressurized Electro Slag Remelting (PESR) have gained a considerable interest, since these methods eliminate the risk of picking up hydrogen and oxygen from the atmosphere and result in a further reduction of the amount of non metallic inclusions in the remelted material.
  • IERS Inertgas Electro Slag Remelting
  • PESR Pressurized Electro Slag Remelting
  • the general objective of the present invention is to provide a mould for the manufacturing of large sized mould steel ingots with an improved cleanliness and/or an improved microstructure in an Inertgas Electro Slag Remelting (IESR) or in a Pressurized Electro Slag Remelting (PESR) process.
  • IESR Inertgas Electro Slag Remelting
  • PESR Pressurized Electro Slag Remelting
  • Another object is to provide an IESR or PESR apparatus comprising the improved large size mould.
  • a further object is to provide a steel ingot obtainable with the inventive IESR or PESR and thereby having an improved cleanliness and/or an improved microstructure.
  • FIG. 1 is a schematic drawing of the cross section of a conventional mould having a diameter of 1250 mm and having an area of 0.39 m 2 .
  • FIG. 2 is a schematic drawing of one embodiment of the present invention showing the cross section of an elliptical mould having the same area as the conventional mould.
  • the present inventor has surprisingly found that the cleanliness of the refined mould steel can be influenced by changing the shape of the mould.
  • the cleanliness of the refined mould steel can be influenced by changing the shape of the mould.
  • the inventive mould comprises a non-rectangular and non-circular inner copper sleeve having a width, w, of 1000-2500 mm and a thickness, t, of 700-1250 mm, wherein the short sides in the thickness direction of the copper sleeve at least partly have sections with curved surfaces and wherein the long sides in the width direction at least partly have sections with curved surfaces.
  • FIG. 1 discloses the cross section of a conventional mould having a diameter, d, of 1250 mm and an area of 0.39 m 2 .
  • FIG. 2 discloses the cross section of an inventive mould having the same area as the conventional mould but having an elliptical shape.
  • the thickness of the mould was chosen to be 800 mm, wherein the width of the elliptical mould was 1953 mm.
  • Both figures relate to the size of the inner sleeve of the mould, which size, except for the solidification shrinkage, corresponds to the size of the remelted ingot.
  • the mould can have different shapes.
  • the short sides, in the thickness direction of the copper sleeve, as well as the long sides, in the width direction both have, at least partly, sections with curved surfaces.
  • the short sides and the long sides may have sections that are straight.
  • the short sides may optionally be provided with straight sections, which are positioned in the mid portions of the short sides, i.e. at t/2.
  • the short sides may be designed to have a constant radius of curvature (arc shaped) or having a variable radius of curvature (e.g. oval-, elliptical- or super elliptical-shaped).
  • the radius of curvature can extend to any desired point up to the position w/4.
  • the long sides may have only one straight section or more than one straight section on each side.
  • Two straight sections may be formed on each long side, in particular in the sections w/8 to w/2 and may have a smooth transition at w/2.
  • the mid thickness of the mould at w/2 may be the same as the thickness at the quarter thickness of the mould at w/4 from each short side of the mould. However, it is normally preferred, that the mid thickness of the mould at w/2 is at least 10 mm thicker than the quarter thickness at w/4 of the mould from each short side of the mould.
  • the thickness at w/2 may be 20, 40, 60, 80, 100, 120, 140, 160 or 180 mm larger than the thickness at w/4.
  • the sections with curved surfaces of the short sides can have a constant or a variable radius of curvature.
  • the short sides may have a constant or variable radius of curvature up to the position w/4.
  • the mould can have an oval, elliptical or super-elliptical form and/or the width of the mould, w, may be at least 1.1 times larger than the thickness, t, preferably w>1.2t.
  • the size of the mould can be freely varied within the ranges set out in claim 1 .
  • the width can be restricted to 2400, 2300, 2200, 2100, 2000, 1900, 1800, 1700, 1600, 1500, 1400, 1300, 1200 or 1100 mm.
  • the thickness can be restricted to 1200, 1150, 1000, 950, 900, 850, 800 or 750 mm. The width is always larger than the thickness.
  • a plastic mould steel was produced by conventional EAF steelmaking followed by ladle metallurgy, vacuum degassing and casting into electrodes having suitable diameters for the remelting in the respective PESR.
  • the moulds are schematically shown in FIGS. 1 and 2 .
  • the remelting was performed with the same type of slag based on CAF-CaO—Al 2 O 3 under argon protective atmosphere. Samples were taken from the centre of the forged and heat treated material at the same height of the respective ingot. The samples were cut, cold mounted, grinded and polished and thereafter subjected to examination in a Light Optical Microscope (LOM). The number of inclusions per mm 2 in the respective ingot was examined. Only inclusions larger than 8 ⁇ m were counted.
  • LOM Light Optical Microscope
  • the positive result may be influenced by a number of factors such as a different turbulent flow in the slag and in the molten pool, a less deep metal pool and/or by more favourable solidification conditions, leading to a reduction of the solidification time of the ingot and a reduced amount or complete absence of equiaxed crystals in the remelted ingot.
  • the invention is particularly suited for the manufacturing of large sized dies in hot work tool steel for die casting of light alloys as well as for the manufacturing of large sized plastic mould steel moulds used for the moulding of plastics articles.

Abstract

The invention relates to a mould for the manufacturing of mould steels in an inert gas or a pressurized electro slag re-melting apparatus. The mould comprises a non-rectangular and non-circular inner copper sleeve having a width, w, of 1000-2500 mm and a thickness, t, of 700-1250 mm, wherein the short sides in the thickness direction of the copper sleeve at least partly have sections with curved surfaces and wherein the long sides in the width direction at least partly have sections with curved surfaces.

Description

TECHNICAL FIELD
The invention relates to a mould for the manufacturing of mould steels in an Inertgas Electro Slag Remelting (IESR) or a Pressurized Electro Slag Remelting (PESR) process.
BACKGROUND ART
Mould steels are used for making moulds and dies for the manufacturing of light metal or plastic articles. Electro Slag Remelting (ESR) is commonly used in order to minimize segregation and to reduce the amount of non metallic inclusions of the remelted material. The cleanliness and homogeneity of ESR ingots result in improved mechanical properties as compared to conventionally cast material. The conventional ESR is performed without isolation of the atmosphere.
In recent years the protective gas methods Inertgas Electro Slag Remelting (IESR) and Pressurized Electro Slag Remelting (PESR) have gained a considerable interest, since these methods eliminate the risk of picking up hydrogen and oxygen from the atmosphere and result in a further reduction of the amount of non metallic inclusions in the remelted material.
However, it has now been recognized, that large ingots produced by IESR and PESR do not have the same high cleanliness as compared to smaller ingots. This problem is important, in particular for ingots having diameters exceeding 1000 mm, in particular in view of the increased demand for large sized moulds and dies.
SUMMARY OF THE INVENTION
The general objective of the present invention is to provide a mould for the manufacturing of large sized mould steel ingots with an improved cleanliness and/or an improved microstructure in an Inertgas Electro Slag Remelting (IESR) or in a Pressurized Electro Slag Remelting (PESR) process.
Another object is to provide an IESR or PESR apparatus comprising the improved large size mould. A further object is to provide a steel ingot obtainable with the inventive IESR or PESR and thereby having an improved cleanliness and/or an improved microstructure.
These objects are achieved by the means of the invention as defined in the independent claims.
BRIEF DESCRIPTION OF THE DRAWINGS
In the following, the invention will be described in more detail with reference to the preferred embodiments and the appended drawings.
FIG. 1 is a schematic drawing of the cross section of a conventional mould having a diameter of 1250 mm and having an area of 0.39 m2.
FIG. 2 is a schematic drawing of one embodiment of the present invention showing the cross section of an elliptical mould having the same area as the conventional mould.
 DETAILED DESCRIPTION
The invention is defined in the claims.
The present inventor has surprisingly found that the cleanliness of the refined mould steel can be influenced by changing the shape of the mould. By replacing the conventional round mould nowadays used in IESR and PESR by a mould having an improved shape, it is possible to further improve the cleanliness and the microstructure of the remelted ingot.
The inventive mould comprises a non-rectangular and non-circular inner copper sleeve having a width, w, of 1000-2500 mm and a thickness, t, of 700-1250 mm, wherein the short sides in the thickness direction of the copper sleeve at least partly have sections with curved surfaces and wherein the long sides in the width direction at least partly have sections with curved surfaces.
The invention will be described in detail with reference to the attached drawings.
FIG. 1 discloses the cross section of a conventional mould having a diameter, d, of 1250 mm and an area of 0.39 m2.
FIG. 2 discloses the cross section of an inventive mould having the same area as the conventional mould but having an elliptical shape. The thickness of the mould was chosen to be 800 mm, wherein the width of the elliptical mould was 1953 mm.
Both figures relate to the size of the inner sleeve of the mould, which size, except for the solidification shrinkage, corresponds to the size of the remelted ingot.
According to the invention, the mould can have different shapes. However, the short sides, in the thickness direction of the copper sleeve, as well as the long sides, in the width direction, both have, at least partly, sections with curved surfaces.
The short sides and the long sides may have sections that are straight.
The short sides may optionally be provided with straight sections, which are positioned in the mid portions of the short sides, i.e. at t/2. The short sides may be designed to have a constant radius of curvature (arc shaped) or having a variable radius of curvature (e.g. oval-, elliptical- or super elliptical-shaped). The radius of curvature can extend to any desired point up to the position w/4.
The long sides may have only one straight section or more than one straight section on each side. Two straight sections may be formed on each long side, in particular in the sections w/8 to w/2 and may have a smooth transition at w/2.
The mid thickness of the mould at w/2 may be the same as the thickness at the quarter thickness of the mould at w/4 from each short side of the mould. However, it is normally preferred, that the mid thickness of the mould at w/2 is at least 10 mm thicker than the quarter thickness at w/4 of the mould from each short side of the mould. The thickness at w/2 may be 20, 40, 60, 80, 100, 120, 140, 160 or 180 mm larger than the thickness at w/4.
The sections with curved surfaces of the short sides can have a constant or a variable radius of curvature. The short sides may have a constant or variable radius of curvature up to the position w/4. The mould can have an oval, elliptical or super-elliptical form and/or the width of the mould, w, may be at least 1.1 times larger than the thickness, t, preferably w>1.2t.
The size of the mould can be freely varied within the ranges set out in claim 1. The width can be restricted to 2400, 2300, 2200, 2100, 2000, 1900, 1800, 1700, 1600, 1500, 1400, 1300, 1200 or 1100 mm. The thickness can be restricted to 1200, 1150, 1000, 950, 900, 850, 800 or 750 mm. The width is always larger than the thickness.
Example
A plastic mould steel was produced by conventional EAF steelmaking followed by ladle metallurgy, vacuum degassing and casting into electrodes having suitable diameters for the remelting in the respective PESR. The moulds are schematically shown in FIGS. 1 and 2. The remelting was performed with the same type of slag based on CAF-CaO—Al2O3 under argon protective atmosphere. Samples were taken from the centre of the forged and heat treated material at the same height of the respective ingot. The samples were cut, cold mounted, grinded and polished and thereafter subjected to examination in a Light Optical Microscope (LOM). The number of inclusions per mm2 in the respective ingot was examined. Only inclusions larger than 8 μm were counted.
It was found, that the number of inclusions per mm2 could be reduced by changing the thickness of the mould. The reason for this result is presently not fully understood and the inventor does not wish to be bound by any theory. However, it would appear, that the positive result may be influenced by a number of factors such as a different turbulent flow in the slag and in the molten pool, a less deep metal pool and/or by more favourable solidification conditions, leading to a reduction of the solidification time of the ingot and a reduced amount or complete absence of equiaxed crystals in the remelted ingot.
INDUSTRIAL APPLICABILITY
The invention is particularly suited for the manufacturing of large sized dies in hot work tool steel for die casting of light alloys as well as for the manufacturing of large sized plastic mould steel moulds used for the moulding of plastics articles.

Claims (12)

The invention claimed is:
1. A mould for the manufacturing of mould steels in an inert gas or a pressurized electro slag re-melting process, characterized in that the mould comprises a non-rectangular and non-circular inner copper sleeve having a width, w, of 1000-2500 mm and a thickness, t, of 700-1250 mm, wherein the short sides in the thickness direction of the inner copper sleeve, at least partly, have sections with curved surfaces and wherein the long sides in the width direction, at least partly, have sections with curved surfaces.
2. The mould according to claim 1, wherein the curved surfaces of the short sides have a constant radius of curvature.
3. The mould according to claim 1, wherein the curved surfaces of the short sides have a variable radius of curvature.
4. The mould according to claim 3, wherein the mould has an oval, elliptical or super-elliptical form.
5. The mould according to claim 3, wherein the curved surfaces of the short sides have straight sections.
6. The mould according to claim 1, wherein the mid thickness of the mould at w/2 is the same as the thickness at the quarter thickness of the mould at w/4 from both short sides of the mould.
7. The mould according to claim 1, wherein the mid thickness of the mould at w/2 is at least 10 mm thicker than the quarter thickness at w/4 of the mould from both short sides of the mould.
8. The mould according to claim 1, wherein the mould has a width of 1500-2000 mm and/or a thickness of 800-1050 mm.
9. The mould according to claim 1, wherein the long sides have at least one straight section.
10. The mould according to claim 1, wherein the inner copper sleeve does not have any welding seams.
11. An Inertgas Electro Slag Remelting or a Pressurized Electro Slag Remelting apparatus characterized in that it is provided with a mould according to claim 1.
12. An ESR remelted tool steel ingot for making moulds or dies, characterized in that the steel ingot is obtainable with an apparatus as defined in claim 11, wherein the steel ingot is non-rectangular and non-circular and has a width, w, of 1000-2500 mm and a thickness, t, of 700-1250 mm and wherein the short sides in the thickness direction of the ingot, at least partly, have sections with curved surfaces and wherein the long sides in the width direction, at least partly, have sections with curved surfaces.
US16/074,015 2016-02-16 2017-01-27 Mould for manufacturing mould steels Active 2037-08-17 US10906095B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE1650203 2016-02-16
SE1650203-1 2016-02-16
SE1650203 2016-02-16
PCT/SE2017/050073 WO2017142455A1 (en) 2016-02-16 2017-01-27 A mould for the manufacturing of mould steels in an electro slag remelting process

Publications (2)

Publication Number Publication Date
US20190039127A1 US20190039127A1 (en) 2019-02-07
US10906095B2 true US10906095B2 (en) 2021-02-02

Family

ID=59625325

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/074,015 Active 2037-08-17 US10906095B2 (en) 2016-02-16 2017-01-27 Mould for manufacturing mould steels

Country Status (14)

Country Link
US (1) US10906095B2 (en)
EP (1) EP3417081B1 (en)
JP (1) JP6856652B2 (en)
KR (1) KR102656953B1 (en)
CN (1) CN108603244A (en)
BR (1) BR112018014475B1 (en)
CA (1) CA3012314C (en)
ES (1) ES2879354T3 (en)
MX (1) MX2018009623A (en)
PL (1) PL3417081T3 (en)
RU (1) RU2732267C2 (en)
SI (1) SI3417081T1 (en)
TW (1) TWI700376B (en)
WO (1) WO2017142455A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI798338B (en) * 2018-06-26 2023-04-11 美商Ａ芬克父子公司 Plastic injection mold tooling and a method of manufacture thereof

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB536470A (en) 1939-02-23 1941-05-15 Robert Kingsley Hopkins Method and apparatus for making alloy bodies
JPS613651B2 (en) 1981-12-03 1986-02-03 Sumitomo Denki Kogyo Kk
JPS6336965A (en) 1986-07-30 1988-02-17 Daido Steel Co Ltd Electro-slag remelting method
US4953177A (en) 1989-07-03 1990-08-28 Allegheny Ludlum Corporation Method and means of reducing the oxidization of reactive elements in an electroslag remelting operation
SU816161A1 (en) 1976-08-02 1991-11-23 Производственное Объединение "Мариупольтяжмаш" Crystallizer for electroslag remelting
RU2026147C1 (en) 1991-03-28 1995-01-09 Омский политехнический институт Apparatus for casting with solidification under pressure
SU1788770A3 (en) 1991-02-25 1995-03-20 Пермский машиностроительный завод им.В.И.Ленина Method for electroslag melting of ingots
WO1999020804A1 (en) 1997-10-22 1999-04-29 General Electric Company Method for dissolution of nitrogen-rich inclusions in titanium and titanium alloys
CN201400710Y (en) * 2008-12-04 2010-02-10 江苏华久特钢工具有限公司 Electroslag remelting crystallizer for producing high-speed steel
CN201459215U (en) 2009-09-10 2010-05-12 重庆文理学院 Rectangular crystallizer
JP2012241230A (en) 2011-05-19 2012-12-10 Hitachi Metals Ltd Manufacturing method of ingot
US20130336353A1 (en) 2012-06-19 2013-12-19 Martha Krepel Furnace And Method For Electroslag Remelting
CN104388689A (en) 2014-11-28 2015-03-04 中国科学院金属研究所 Method and device for casting electromagnetic compound control electroslag remelting fine grains

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS613651A (en) * 1984-06-19 1986-01-09 Mitsubishi Metal Corp Water-cooled casting mold for electroslag refining
JPH0613651A (en) * 1992-06-24 1994-01-21 Matsushita Electric Ind Co Ltd Semiconductor light emitting element
CN201442970U (en) * 2009-06-15 2010-04-28 沈阳和泰冶金设备有限公司 Electric slag furnace crystallizer
CN101921920B (en) * 2009-06-15 2012-08-08 沈阳和泰冶金设备有限公司 Crystallizer of electroslag furnace
CN203184610U (en) * 2013-01-17 2013-09-11 中国科学院金属研究所 Steel ingot mold for large-scale and extremely thick slab
CN204803381U (en) * 2015-06-26 2015-11-25 抚顺市晟隆金属制品有限公司 Electroslag crystallizer

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB536470A (en) 1939-02-23 1941-05-15 Robert Kingsley Hopkins Method and apparatus for making alloy bodies
SU816161A1 (en) 1976-08-02 1991-11-23 Производственное Объединение "Мариупольтяжмаш" Crystallizer for electroslag remelting
JPS613651B2 (en) 1981-12-03 1986-02-03 Sumitomo Denki Kogyo Kk
JPS6336965A (en) 1986-07-30 1988-02-17 Daido Steel Co Ltd Electro-slag remelting method
US4953177A (en) 1989-07-03 1990-08-28 Allegheny Ludlum Corporation Method and means of reducing the oxidization of reactive elements in an electroslag remelting operation
SU1788770A3 (en) 1991-02-25 1995-03-20 Пермский машиностроительный завод им.В.И.Ленина Method for electroslag melting of ingots
RU2026147C1 (en) 1991-03-28 1995-01-09 Омский политехнический институт Apparatus for casting with solidification under pressure
WO1999020804A1 (en) 1997-10-22 1999-04-29 General Electric Company Method for dissolution of nitrogen-rich inclusions in titanium and titanium alloys
CN201400710Y (en) * 2008-12-04 2010-02-10 江苏华久特钢工具有限公司 Electroslag remelting crystallizer for producing high-speed steel
CN201459215U (en) 2009-09-10 2010-05-12 重庆文理学院 Rectangular crystallizer
JP2012241230A (en) 2011-05-19 2012-12-10 Hitachi Metals Ltd Manufacturing method of ingot
US20130336353A1 (en) 2012-06-19 2013-12-19 Martha Krepel Furnace And Method For Electroslag Remelting
CN104388689A (en) 2014-11-28 2015-03-04 中国科学院金属研究所 Method and device for casting electromagnetic compound control electroslag remelting fine grains

Non-Patent Citations (11)

* Cited by examiner, † Cited by third party
Title
Database WPI Week 201016, Thomson Scientific, London, GB; AN 2010-B96540, XP-002787050, 2017 Clarivate Analytics.
Database WPI Week 201036, Thomson Scientific, London, GB; AN 2010-F82585, XP-002787501, 2017 Clarivate Analytics.
DATABASE WPI Week 201578, 17 December 2018 Derwent World Patents Index; XP002787501
Extended European Search Report for Application No. EP 17753570.5, dated Dec. 18, 2018.
Holzgruber, W., "Overview of 50 Years of Development in Electroslag Remelting in Austria," Berg-und Huttenmannische Monatshefte, vol. 161, S2-S11 (2016).
International Search Report for International Application No. PCT/SE2017/050073, dated Apr. 5, 2017.
Japanese Notice of Reasons for Rejection dated Sep. 17, 2020, for Japanese Patent Application No. 2018-536771.
Office Action corresponding in Chinese Application No. 201780010110.8 dated Jul. 30, 2019. (English Translation).
Russian Office Action dated Mar. 25, 2020, for Russian Patent Application No. 2018130152/02(048819).
Russian Search Report dated Mar. 25, 2020, for Russian Patent Application No. 2018130152/02(048819).
WPI / 2017 Clarivate Analytics Week 201016, 10 February 2010 Derwent World Patents Index; XP002787050, WANG J: "Electro-slag re-melting crystallizer for high-speed production of steel, has water inlet pipe and water outlet pipe which are arranged on the outer wall of steel outer shell and connected with a cooling water chamber"

Also Published As

Publication number Publication date
EP3417081B1 (en) 2021-03-31
JP6856652B2 (en) 2021-04-07
RU2732267C2 (en) 2020-09-14
CA3012314C (en) 2023-11-14
EP3417081A1 (en) 2018-12-26
RU2018130152A3 (en) 2020-03-26
WO2017142455A1 (en) 2017-08-24
EP3417081A4 (en) 2019-01-16
JP2019504769A (en) 2019-02-21
RU2018130152A (en) 2020-03-17
KR20180114907A (en) 2018-10-19
TW201739924A (en) 2017-11-16
MX2018009623A (en) 2018-11-29
ES2879354T3 (en) 2021-11-22
US20190039127A1 (en) 2019-02-07
CN108603244A (en) 2018-09-28
BR112018014475A2 (en) 2018-12-11
CA3012314A1 (en) 2017-08-24
SI3417081T1 (en) 2021-08-31
BR112018014475B1 (en) 2022-10-18
TWI700376B (en) 2020-08-01
KR102656953B1 (en) 2024-04-12
PL3417081T3 (en) 2021-10-04

Similar Documents

Publication Publication Date Title
ES2643490T3 (en) Systems and methods for forming and processing alloy ingots
CN109112408B (en) Manufacturing method of large-specification P92 heat-resistant steel forging
CN112410650B (en) Control method for improving low-power quality and segregation index of high-carbon chromium bearing steel
CN103014534B (en) Cast hot work die steel and processing method thereof
EP1649950A2 (en) Method for manufacturing copper alloys
CN106994471A (en) A kind of 780MPa intensity levels electron beam fuse 3D printing component titanium alloy wire materials
CN103320727A (en) Aluminum alloy medium plate preparation method
CN104532135A (en) Cold work die steel and preparation method thereof
CN105705271A (en) Methods and apparatus to produce high performance axisymmetric components
CN104818424B (en) High-quality H13 rare earth die steel and production method thereof
US10906095B2 (en) Mould for manufacturing mould steels
CN115491571B (en) Preparation method of hot-work die steel and hot-work die steel
CN102438764B (en) Method for producing elongate products made of titanium
CN115488298A (en) Continuous casting billet for high-carbon steel wire and preparation method thereof
CN104988393A (en) Production method of steel plate for bridge anchor box
JP2006326639A (en) Method for producing maraging steel
JP6452037B2 (en) Casting method and casting apparatus
JP7417056B2 (en) titanium alloy ingot
KR101676144B1 (en) Medium carbon free cutting steel having hot workability and method for manufacturing the same
KR102103382B1 (en) Steel material and manufacturing method thereof
CN107052280A (en) Produce the ingot mould and technique of sector electrode
Tian et al. Investigation on elements distribution in Waspaloy alloy ingot during homogenization.
RU2610646C1 (en) Method for producing axially symmetrical parts of copper-based heat-resistant alloys
Plockinger Electroslag Remelting–a Modern Tool in Metallurgy
JP2021094589A (en) Titanium alloy ingot

Legal Events

Date Code Title Description
FEPP Fee payment procedure

Free format text: ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: BIG.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

AS Assignment

Owner name: UDDEHOLMS AB, SWEDEN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:PERSSON, EVA SJOQVIST;REEL/FRAME:046794/0637

Effective date: 20180904

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: PUBLICATIONS -- ISSUE FEE PAYMENT VERIFIED

STCF Information on status: patent grant

Free format text: PATENTED CASE